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Another related question - with a custom tune is it a big deal to switch from a catless downpipe to a catted one later on(like the active autowerke)? I’ll be getting tuned with ecutek soon and was planning on asking my tuner, but was curious if anyone here might know. I figured that might be...

Thanks for all the input - thinking I'm gonna go catless. As a side question to does anyone know if the downpipe diameter makes any difference with a catless DP? I was trying to decide between some like the AMS , Evolution Racewerks, and Fi exhaust (only because I might get their full exhaust...

Hello, new here! I've done some searching around and had trouble finding clear answers for this. I'm looking at getting a custom tune for my 2020 - basically just 93 octane and flex for e50 on stock turbo. Would going with a higher flow catted DP like the FI exhaust sport 200 cell, or the CG...